Four Person Pedal Car?

How about the two teams create a four person pedal-car. They would build essentially a four person bike powered by their legs. A race would be the only way to compete. I love this show more then any show ever. I plan on creating a 3 wheeled car to pull of my boat this summer using a moped, bike parts, and oh maybe everything else.
Thanks,
Sam Gruen

What's the name of the exercise machine where it feels like you are
walking up a staircase? Couldn't you use the energy created by that
to do such a thing? But then there probably aren't four of those in
most junk yards, huh. But you could tie your feet to boards.

I got to pedal a stair-climber powered tricycle once. (A treadle
trike.) It was commercially produced about six years ago and way over
priced. You stood straight up on it, but it had a pad to lean back
against. It was geared hideously high, but once you got it moving, you
hardly had to move your legs or bend you knees at all. The thing is,
it cornered like a phone booth on a roller skate. Yeow!